from sys import argv

script, filename = argv

print (f"We're going to erase {filename}.")    # 擦除文件
print ("If you don't want that, hit CTRL-C (^C).")
print ("If you do want that, hit RETURN.")

input ("？")    #

print ("Opening the file ...")
target = open (filename,'w')   # 打开的文件作为对象

print ("Truncating the file. Goodbye!")
target.truncate()

print("Now I'm going to ask you for three lines.")

line1 = input ("line 1: ")
line2 = input ("line 2: ")
line3 = input ("line 3: ")

print ("I'm going to write these to the file.")

taget.write(line1 + "\n" + line2 + "\n" + line3)

# target.write(line2)
# target.write("\n")
# target.write(line3)
# target.write("\n")

print("And finally, we close it.")
target.close()
